The Dolphins signed Smith to their practice squad Tuesday, Barry Jackson of the Miami Herald reports.
Smith was released by the Cardinals on Sept. 18 after accumulating two tackles in two games. The third-year defensive tackle out of Georgia has appeared in 13 games in his career.
Smith was released by Arizona on Tuesday, Darren Urban of the Cardinals' official website reports.
Smith was claimed off waivers from the Falcons following final cuts and appeared in both games for the Cardinals. The five-year veteran has 16 tackles in 13 career games.
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